Use `dyn Trait` for working with databse

It improves compile time in `--release` mode quite a bit, it doesn't
really slow things down and, conceptually, it seems closer to what we
want the physical architecture to look like (we don't want to
monomorphise EVERYTHING in a single leaf crate).

1 files changed, 6 insertions, 6 deletions

diff --git a/crates/ra_hir_def/src/src.rs b/crates/ra_hir_def/src/src.rs
index 499375b80..46e90da70 100644
--- a/crates/ra_hir_def/src/src.rs
+++ b/crates/ra_hir_def/src/src.rs
@@ -8,14 +8,14 @@ use crate::{db::DefDatabase, AssocItemLoc, ItemLoc};
 
 pub trait HasSource {
     type Value;
-    fn source(&self, db: &impl DefDatabase) -> InFile<Self::Value>;
+    fn source(&self, db: &dyn DefDatabase) -> InFile<Self::Value>;
 }
 
 impl<N: AstNode> HasSource for AssocItemLoc<N> {
     type Value = N;
 
-    fn source(&self, db: &impl DefDatabase) -> InFile<N> {
-        let node = self.ast_id.to_node(db);
+    fn source(&self, db: &dyn DefDatabase) -> InFile<N> {
+        let node = self.ast_id.to_node(db.upcast());
         InFile::new(self.ast_id.file_id, node)
     }
 }
@@ -23,8 +23,8 @@ impl<N: AstNode> HasSource for AssocItemLoc<N> {
 impl<N: AstNode> HasSource for ItemLoc<N> {
     type Value = N;
 
-    fn source(&self, db: &impl DefDatabase) -> InFile<N> {
-        let node = self.ast_id.to_node(db);
+    fn source(&self, db: &dyn DefDatabase) -> InFile<N> {
+        let node = self.ast_id.to_node(db.upcast());
         InFile::new(self.ast_id.file_id, node)
     }
 }
@@ -32,5 +32,5 @@ impl<N: AstNode> HasSource for ItemLoc<N> {
 pub trait HasChildSource {
     type ChildId;
     type Value;
-    fn child_source(&self, db: &impl DefDatabase) -> InFile<ArenaMap<Self::ChildId, Self::Value>>;
+    fn child_source(&self, db: &dyn DefDatabase) -> InFile<ArenaMap<Self::ChildId, Self::Value>>;
 }